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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4aca931adc7fe112c36328bb36be823df25d2ce844536daccf78518cee58460f' 
  AND token = 'hC2oXGl0y6hRoSgs4QkvsWBQ5kdb7Z10onIsLT77sPQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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