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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2205240b96776e7dd59ad32153c110d45539ab61302a2cf04fef561dc81192e7' 
  AND token = '2y9eWpORhn2ZBy+AcLagoz4yRFI5Pg9AswcNB3Xregs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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