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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'fbde51611a5095c804ecb9cfc5a114ff55dc03a9cd3bc9dcd7c18252e538ad9e' 
  AND token = 'koGZ9/JNz4tlk/C5VGapmh0RRYI/LDT0teL22T07JIs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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