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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c4e6025cf8015f3d174352c2ba546a5869fe1c566dcb409ea90fae1b4c969ef0' 
  AND token = 'ItaI55m1xCEvm8GriX1yK83RjOD4p7v/Ax9G3TLb6n0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}